15% Benchmark: How UK Designers Use Trade Discounts Ethically
By Faura ·
Trade discounts are a legitimate commercial tool for interior designers when the procurement model is declared and written into the client contract. Two actions matter immediately: decide whether you’re acting as agent or principal, and put that decision, along with your fee basis, into the engagement letter before the first order is placed. Discounts typically vary widely depending on the product category, and the British Institute of Interior Design benchmark a 15% administration fee for agent-model work.
TL;DR:
- Trade discounts vary significantly by product category, with manufacturers offering up to 50% off, especially for bespoke and made-to-order items.
- Always confirm whether discount quotes are off retail price or trade lists, and ensure written confirmation in the purchase order to prevent renegotiation later.
- Setting a consistent fee structure, such as 15% of trade price for agent work, helps maintain transparency and defend pricing against client questions.
- Disclosing procurement models and fees upfront in the engagement letter is legally mandatory and crucial for maintaining trust and avoiding conflicts of interest.
- Building a trade account with verified business documents and a portfolio accelerates access to credit terms and streamlines procurement logistics.
Table of Contents
- How trade discounts work and what to expect
- How do I open and maintain a trade account?
- Agent or principal: which procurement model and fee should you use?
- Is it legal to not disclose a trade discount to clients?
- Turning procurement into a professional service
- What should your contract and checklist cover?
- What I’ve learned about pricing procurement fairly
- Access trade terms without the admin
- Sources
- FAQ
How trade discounts work and what to expect
“To the trade” pricing exists because suppliers want a professional sales channel that doesn’t compete with retail customers on price or require the same marketing spend. In exchange for volume, repeat business, and specification credibility, brands offer designers a lower cost base than the public sees.
The scale of that saving varies enormously by category, and treating any single figure as universal is a mistake. Industry guidance on trade discount programmes suggests general retail brands often extend somewhere in the 10% to 20% band, while manufacturers that sell exclusively to trade can offer 30% to 50% off. Bespoke joinery, custom upholstery, and made-to-order lighting sit at the higher end because the supplier is cutting out a retail markup entirely, not just discounting one.
A few things to check before you rely on any of these figures for a quote:
- Confirm whether the quoted rate is off RRP or off a separate trade price list, since the two can differ significantly.
- Check whether the discount is quoted inclusive or exclusive of VAT, particularly when comparing suppliers.
- Ask whether minimum order values or annual spend thresholds apply before the top rate kicks in.
- Get the rate confirmed in writing on the order itself, not just quoted verbally by a sales rep.
That last point is worth building into your process permanently. Verbal quotes get renegotiated at invoice stage more often than most designers expect, and a written trade price confirmation on the purchase order gives you something to point to if a supplier’s finance team tries to adjust terms later.
How do I open and maintain a trade account?
Suppliers vet trade applicants because the discount is a cost to them, not a courtesy, so they want evidence you’re a genuine trading business rather than a consumer looking for a discount code. The Architectural Digest guide to setting up trade discounts lays out the paperwork most suppliers expect, and the sequence below reflects how that process typically runs in practice.
- Gather your business registration documents, VAT or resale certification where relevant, and a business bank account in the studio’s name rather than a personal account.
- Build a simple portfolio or website that shows completed projects, since suppliers use this to confirm you’re actively practising, not just registered on paper.
- Apply through the supplier’s trade portal or a direct email to their trade team, referencing specific product lines you intend to specify.
- Expect proforma terms at first: payment in full before dispatch, which is standard for new accounts with no trading history.
- Build a track record over several orders, then request net 30 credit terms, supplying trade references from other suppliers if asked.
A consolidated purchase history across two or three suppliers, rather than scattered one off orders, does more to unlock credit terms than almost anything else. If your studio pipeline is genuinely full, say so. Suppliers extending credit terms are assessing risk, and a visible project pipeline reduces theirs. Designers whose own finances are structured cleanly, including business banking and credit history kept separate from personal accounts, tend to move through this stage faster; a resource like Haven Mark’s guidance for self-employed and business owners is worth a look if you’re formalising your studio’s financial setup for the first time.
Agent or principal: which procurement model and fee should you use?
The model you choose determines both your legal exposure and how you’re allowed to price. As agent, you procure on the client’s behalf, the trade discount is disclosed, and your income comes from a transparent fee on top. As principal, you buy the goods yourself and resell them to the client at a marked-up price, taking on stock risk and payment liability in the process.
The BIID code of conduct sets 15% as a defensible benchmark administration fee under the agent model. It is calculated on the trade price exclusive of VAT, not the retail price, so a £10,000 trade order carries a £1,500 administration fee, invoiced separately and disclosed to the client alongside the supplier cost.
When you buy stock outright, you’re exposed to damage in transit, storage costs, and the possibility the client changes their mind after the order is placed.
Before setting your fee, decide what sits inside the base and what sits outside it:
- Include the trade price of goods, exclusive of VAT, as your calculation base.
- Add delivery, customs duties, and storage as separate line items rather than folding them into the percentage fee.
- Exclude your own studio time from the procurement fee if you’re already charging design fees separately, to avoid double-billing the client.
Many studios run a hybrid: agent-model fees for straightforward retail-brand purchases, principal-model markups for bespoke or made-to-order pieces where risk is higher. Present both to the client as options rather than defaults, so the fee basis is a choice they’ve agreed to, not a surprise on the final invoice.
Pro Tip: Keep your fee structure identical across every supplier and every project. Clients notice inconsistency faster than they notice the fee itself, and a standard rate is far easier to defend if a client ever queries a bill.
Is it legal to not disclose a trade discount to clients?
No. Undisclosed supplier payments that encourage improper performance can amount to a criminal offence under the Bribery Act 2010, and that risk sits with you personally, not just the studio.
A hidden markup that the client never agreed to isn’t a pricing strategy. It’s a conflict of interest that the BIID’s own guidance treats as a professional duty to avoid, not a grey area open to interpretation.
The BIID’s conflicts of interest guidance requires members to be transparent about procurement models and disclose fees before work begins. The institute’s Kick Out the Kick-Backs campaign has specifically targeted the practice of hidden supplier commissions, warning that clandestine arrangements carry both legal exposure and professional sanction.
Three controls reduce that exposure to something manageable:
- A contract clause naming the procurement model and fee basis before any order is placed.
- Client funds held in a separate ledger from studio operating funds, so procurement money is never commingled.
- A clear invoice audit trail, with supplier price confirmations kept on file against every client invoice.
If a client ever discovers an undisclosed markup after the fact, even a legitimate one, the damage to trust is usually worse than the money involved. The remedy is straightforward: disclose immediately, reissue the invoice showing the true trade price and fee separately, and treat it as a process failure to fix, not a one-off to bury.
Turning procurement into a professional service
A trade discount only becomes a sustainable business asset when it funds real procurement work rather than sitting as undisclosed margin. Sourcing the right piece, managing lead times across multiple suppliers, checking quality on arrival, and handling returns are all labour, and that labour is what the administration fee is actually paying for.
A trade showroom or residency model shortens that cycle considerably. Faura’s trade offering gives designers access to a curated product library so sourcing doesn’t start from zero on every project, and pairs that with procurement support that handles the logistics a solo studio would otherwise absorb itself.
Tasks that justify the fee typically include:
- Sourcing and shortlisting from a pre-vetted supplier network rather than starting research from scratch.
- Managing lead times and delivery schedules across multiple brands on the same project.
- Quality-checking goods on arrival before they reach a client’s home.
- Handling returns, replacements, and supplier disputes on the client’s behalf.
For a smaller studio, running all of that in-house is expensive relative to the volume of orders it processes. A showroom-hosted client presentation also changes how a scheme lands with a client, letting them see and touch finishes in a dressed setting rather than reviewing a sample board, which is a meaningfully different sales conversation.
What should your contract and checklist cover?
Your engagement letter is the document that actually protects you, so it needs to do more than gesture at “trade pricing” in general terms.
- Name the procurement model explicitly, agent or principal, for each category of purchase in the project.
- State the fee basis and calculation, for example “15% of trade price exclusive of VAT,” so the client can check any invoice against the clause.
- Confirm VAT treatment and how client funds are held, including whether a separate ledger applies.
- Set out a change order process, so a client who alters a specification mid-project understands how the fee recalculates.
- Include a dispute resolution step for disagreements over invoiced amounts, before they escalate.
Operationally, keep a separate client ledger for every project, get written trade price confirmation on each order, and require sign-off on any change order before it’s placed. A single sentence of disclosure wording, such as “Fees are calculated on trade price exclusive of VAT and disclosed on each invoice,” does more to protect a client relationship than a lengthy terms document most clients never read in full.
What I’ve learned about pricing procurement fairly
The studios that struggle with trade pricing aren’t usually the ones charging too much. They’re the ones who never decided what they were charging for in the first place, so the fee feels arbitrary to the client and uncomfortable to defend when questioned.
Disclosure isn’t a compliance chore bolted onto the fun part of the job. It’s what lets you charge a fair fee without flinching, because there’s nothing to hide if a client asks how the number was worked out. Margin and service value aren’t in tension once the fee basis is written down and consistent. The tension only appears when a designer tries to keep both the markup and the mystery, and that combination rarely survives a client who eventually finds a trade price list online.
— Eugene
Access trade terms without the admin
Faura is the alternative to building trade relationships supplier by supplier from a spare room. Through the residency, designers get a trade account, curated access to a product library spanning over 200 brands, and a showroom in Westminster for presenting schemes to private clients rather than emailing sample boards back and forth. The procurement support that comes with it, including sourcing and specification help, absorbs the sourcing, lead-time management, and supplier liaison that otherwise eats into billable design hours. If trade access and a professional base for client meetings would save your studio real time this quarter, the current terms for the residency are available on the site.
Sources
FAQ
What is the typical trade discount for designers?
Discount rates vary widely by category.
What is the 15% rule in interior design?
The 15% figure refers to the BIID’s benchmark administration fee for agent-model procurement, calculated on the trade price exclusive of VAT. It’s a professional reference point, not a legal requirement, and some studios charge more or less depending on the complexity of the sourcing involved.
How much is a typical trade discount worth on a project?
It depends entirely on the mix of suppliers and categories specified, since a project combining retail brands and bespoke joinery will blend a lower and a higher discount band. Asking each supplier for a written trade price confirmation on order is the only reliable way to know the real figure for a given project.
What is the 70/30 rule in interior design?
This isn’t a recognised BIID or industry standard, and definitions circulating online vary considerably. Rather than rely on an unverified rule, base your pricing on a documented procurement model, either the agent fee benchmark or a principal markup, agreed with the client in writing.
Do I need to disclose a trade discount to my client?
Yes. BIID guidance treats disclosure of procurement model and fees as a professional duty, and undisclosed payments that encourage improper performance can carry criminal risk under the Bribery Act 2010. Naming the model and fee basis in the engagement letter before work begins is the standard way to meet that duty.